Coupling.



C. DE SALME.

GOUPLING.

APPLICATION FILED MAY 20, 190s.

Patented May 23, 1911.

annimmt CHARLES DE SALME, 0F ST. LOUIS, MISSOURI.

coUrLING.

Specication of Letters Patent.

Application filed May 20, 1908. Serial No. 433,875.

To all whom 'it may concern:

Be it known that I, CHARLES DE SALME, a citizen of the United States, residing at St. Louis, in the State of Missouri, have invented new and useful Improvements in Couplings, of which the following is a specification.

This invention relates to detachable pipe couplings, more especially those which are to connect the ends of twoI hose sections; and the object of the same is to produce a coupling having wrench faces whereby its members may be forcibly disconnected when rusted and yet the act of disconnection will not detach them from the hose ends.

With the above general object in view the invention consists 1n the novel construction, combination and arrangement of parts herein fully described, illustrated and claimed.

In the accompanying drawings Figure 1 is a plan view of the coupling, one of the coupling members and 'one of the pipe seetions being shown in section. Fig. 2 is a view of the coupling members and clamping cones shown separated.

The cou ling of this invention comprises two 'coupling members 1 and 2 which are the counterpart of each other with the eX- ception that at their inner adjacent ends one of said coupling members is provided with a male threaded extension 3 while the other member is provided with a nut extension having female threads 4 adapted to receive the threaded extension 3 so that both members may be securely fastened together in the manner shown in Fig. 1. 3

Each of the members is exteriorly tapered outwardly and threaded as shown ati-5, the threads resembling those of an ordinary wood screw that is to say the threads are beveled on one side and provided with radial faces at the opposite side so as to obtain a firm hold on the end of a flexible pipe or hose shown at G, which pipe or hose is adapted to be slipped over the threaded portion 5 of the respective coupling member, the 'threaded portion of such couplin member being also tapered or made of gra l ually diminishing diameter toward the outer end thereof in order to facilitate slipping the end of the hose or pipe thereon. Each coupling section is further provided with an enlarged threaded flange 7 adapted to engage' female threads 10 at the larger end of a clamping cone 8, which cone slips over the hose section 6 so that by securing said cone upon the threaded flange 7, the hose section 6 is compressed around the threads 5 which thereby embed themselves into the inner surface of the hose securely fastening the coupling member to the hose. In order to permit the cone to be rotated, it is provided around its larger end with a wrench face 18. Next inside th'e flange 7 each member has a wrench face 9, smaller` than the wrench faces 18, and the members differ from each other only as to their threads 3 and 4 and the relative location of these wrench faces 9 with respect thereto. one member ysuch wrench face surrounds the female threads 4, but on the other such face Patented May 23, 1911. A

surrounds the stem and the male threads 3 project a little beyond the wrench face V9 as best seen in Fig.r2.

The parts of this coupling are assembled in a manner which will be clear. When it is desired to disconnect, two wrenches are employed and one is engaged with each angular portion 9,-and when these wrenches are moved in relatively proper directions the threads 3 and 4 can be forced asunder and the turning of each member to accomplish this end will serve to tighten the threaded flanges 7 within .their vcones 8 rather than to loosen them. Hence the wrench faces 18 shown on the cones 8 will not be necessarily employed at this time, although they may be used at any time for tightening the cones on the hose ends. Moreover, the fact that the wrench faces 9 are of a size to take much smaller wrenches than the wrench faces 18, is of advantage because the small wrenches used for couplin and uncoupling this device cannot by acci-v tions 9 slip accidentally onto the portions 18 which so often happens where sections of hose are coupled or uncoupled in haste.

What I claim is: The herein described coupling for hose sections, the same comprising two metallic members of whichV each has a tapered and externally roughened outer end, next inside said end an enlarged threaded flange, and next insidesaid flange a wrench face smaller than such flange, one member having female threads within its wrench portion and the 11o other having an extension beyond its Wrench portion provided with male threads of the same size as said female threads; combined With tWo cones tapered interiorly to correspond with the outer ends of said members, having threads Within their larger ends oorresponding With those on said anges, and having Wrench faces around their larger ends larger than the Wrench faces on said members.

In testimony WhereofI afliX my signature in presence of two Witnesses.

CHARLES DE SALME.

Witnesses:

JOHN B. MUTH, W'M. T. KEIL. 

